Optoacoustic detection of microparticles in liquids at laser fluences below the optical breakdown threshold

被引：14

作者：

Alimpiev, SS ^{[1
]}

Simanovskii, YO ^{[1
]}

Egerev, SV ^{[1
]}

Pashin, AE ^{[1
]}

机构：

[1] NN ANDREEV ACOUST INST, MOSCOW 117036, RUSSIA

来源：

LASER CHEMISTRY | 1995年 / 16卷 / 02期

关键词：

microinhomogeneous liquids; laser-induced cavitation;

D O I：

10.1155/1995/43684

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An optoacoustic device consisting of a XeCl excimer laser and a measurement cell with an attached piezotransducer was used for detecting microparticles suspended in liquid probes. The potential of optoacoustic diagnostics of microinhomogeneous liquids was enhanced by applying informative parameters of optoacoustic response. Probes of distilled water and Dow Chemical latex suspension were used in experiments. It was shown that cavitation mechanism of optoacoustic conversion taking place at laser fluences below the optical breakdown threshold was well-suited for individual microparticle detection. The approach proposed is different from the well-known breakdown counting optoacoustic technique.

引用

页码：63 / 73

页数：11

共 18 条

[1] LASER INDUCED UNDERWATER SPARKS [J].